The Idolmaster: Cinderella Girls

VS

DayZ

The Idolmaster: Cinderella Girls is a long-running mobile/social idol management game launched in 2011. It remains notable in Japan with an active niche fanbase, regular events, and ties to the broader Idolmaster brand, but is well past its peak popularity. Its daily active players are likely in the tens of thousands, supported by ongoing in-game events, but fallen off from earlier years. Not an MMO, as it lacks persistent world and massive real-time multiplayer interactions.

DayZ is a well-known open-world survival game by Bohemia Interactive, released in late 2018. It remains popular within the survival genre and typically holds a strong concurrent player base, especially on PC with additional activity on consoles. Its age means it's past its peak, but it maintains a loyal community and steady content updates, resulting in an estimated 45,000 daily active players across platforms.